allis



2 Sheets+Sheet 1.

'(No Model.)

T. V. ALLIS. APPARATUS FOR GALVANIZING STRIPS.

.No. 543,822. Patented Ju'i so, 1895;

INVENTP R I: WITNESSES- v (No Model.) 2 Sheets-Sheet 2.

, T. V. ALLIS. I APPARATUS FOR GALVANIZING STRIPS. N0. 543,822.

Patented July 30, 1895. r

, bath to be evenly coated and'for delivering 'ing through the galvanizing process may difference in the circumferential speed, and

- subsequent process of twisting and reeling of galvanizing. ','It is also desirable because UNITED STATES THOMAS V.v ALL lS, OF NEW Y'0R1 ,'N. Y.

3 PATENT t;

JAPPVAZRIAT'USUFOR eALvANtzlNe STRIPS/L:

SPECIFICATION forming part of Letters- Application-filed A t 20, 1894.

Toiall whom/ it may concern: 1

Be it known thatI, THOMAS V. ALLIS, a citi zenof the United States, and aresident of New York city, in the State of New York, have invented certai-n new and useful Improvements in Apparatus for Galv-anizing'Strips, of which the following is a specification. My. invention consists in improved apparatus, in combination with a galvanizing-bath, for uniformly drawing strips throughthe them with regularity upon large spools de-" signed to carry several hundred pounds. I

' In the ordinary practice of galvanizingwire the bundles as taken from the reels after pass weigh possibly one hundred and fifty'p'oun'ds. The inside diameter of thesaid bundles or coils of'wire is about twenty inches and the outside diameter about thirty inches, so it will-be seen there is not-v much variation be.- tween the mean diameter and the inside and outside diameters; so that a spool revolving at a uniform rate 'doesnot create'a verygreat into bundles or upon spools of varying sizes, as the market demands, it becomes desirable to make large spoolsorbundles in the-process the raw material comes to p the galvanizing process wound upon similar large spools,-one length of strip being-evenly brazed to the preceding length, thus "enabling 'a continuous passage of strips through the bath, whichis most desirable. Frequent stoppages not only cause delay but an uneven coating of zinc or spelter, which wastes the metal and makes the finished product spotted and unsalable; besides, frequent stoppages make it diffic'ult to ,cei'ving-spool. p v I revolve at a iltllfOllll speed and drawthe I strips through the bath"without'variationj Venient handling,

Patent No. 543,822, dated july 30,1995: 7, steam. 505,291.. (Ndmadeld keep the molten spelter ata uniform heat,

which is most essential in the processof van iTz-irrg. Hence th-ef longer, more pontinu'g ous,'ar1d uninterrupted tliefrun of strips this i more advantageous and btterthequality' of work done, and, therefore, thefhec e providing for more'uniformity in the f speed through thebath than w'heiidrawn y as the diameter of the coil gets large aso ma pared-with the core.

if Qfi;

I have therefordevisedl;

the reel, whichji'ncreas'es the's'peed' too the plan of interposing drawing and feedr'ol'is and spreading or g p I I tween the galvanizing-bath and the large These drawing and feed r0 and y also 110161116 'strips bael; t prey h't distributing apparatus ne-;

"the spool, which is driven througha frictioii device or by-a slip-belt, from pulling the strips" too fast as the diamete'rof the spool inoreases, and the spreading apparatus distributes the coils evenly' along the spool from end to end nected in great lengths inthel'arge bundles desired.

75' to make it feasible to coilthe strips con The spool revolves at a circumferential speed a little greater atthedrumfthan; the

there is a littleslip of thereeld'riverfrom the beginning,causing sufficient tension to wind the material closely upon the spool; This spool maybe mounted upon trucksforcon;

enabling the handle to be removed therefronii 18S or it may beadapted for In theaccompanyi'ng drawings, Figure 1 is L a side elevation of the: galvanizing-bath and wipers for wiping off the'siirplus metal while in a molten or semi-molten state. Fig. 2 rep;

'resentsa sectional elevation of 'apparatus for drawing and feeding the strips aiid' coi tr'oiff ling the reek-so that'theyfpassthrough the bath at a fixedrate ofz'speed', thereby'insun mg uniformity inplatingij Fig. 3 is a sideelei' vation of a reel. for coiling the eoapqdsmpg; Fig. 4 is a sectional elevation'of the screw of the traversing-guide for distributing the strips on the reel. Fig. 6 is a. detail of the said travel- 's? ingguide in plan View; F g. is a detail'of the Ma ha-t ld i f ost l ifat ee In Fig. 1, I haverpresenteda side elevation of the alvanizingan, as 'indicated'by the 8o feed-rolls deliver the strips at thestart,'so that dotted lines a, inclosed in the brick-setting 1), covered by a coping-plate c, with a metallic strip d to be galvanized as passing over the guide-rolls (1', under the sinker 6, through the molten zinc in the pan and, upward through the wipersf, acting on the sides of the strips, and,through the edge-wipers g, to wipe off the surplus metal before cooling.

The improvements in the apparatus thus far described are the subject of another ap plication for a patent, filed April 19, 1894, Se,- rial No. 508,159, and are not therefore particularly described herein; but it is to be noted that the wipers are arranged in series inclined upwardly from the bath and giving an upward direction to the strips to which a part of my present invention is related. The said upward inclination of the series-of wipers .is for a useful purposecthat is not necessary to be set forth in this case.

The strips (Z pass over suitable carryingsheaves h, thence to the positively-driven drawing and feeding rolls j, whereby it, is designed to cause the strips to pass through the galvanizing-bath at a regular rate of speed for the most uniform action in the bath, it being of the greatest importance that the molten spelter should be kept at the proper degree of heat, which is best maintained by theregularityof speed at which the strips traverse the bath, the heat of whichvaries greatly with the rate of movement of the strips. From the drawing and feed rolls the strips pass on to the reel 70, the speed of which is controlled by said rolls, the reel being driven by a slip-belt Z or a friction-clutch to permit the speed to be so controlled. Guides of any approved kind, as y, are employed in connection with the rolls for guiding the strips to and from the rolls, and the rolls may be of any approved kind.

It is to be noted that a suitable-"length of runway for the strips between the galvanizingbath and the drawing and feedrolls will be provided for allowing the strips to cool down before passing through said rolls and onto the reel, and the guide-roll h first receiving the strips from the wipers is arranged in the ascending lines corresponding with the line of the passage through the ,wipers, the purpose of which is to draw the strips with like relation to both wiping-edges of the last pair of wipers, so that the effect will be the same on both sides, which would not bethe case if the strips were drawn from the wipers in a line below the line of the passagethrough the wipers, and the lower wipers would be unduly worn. The upward direction of the strips from the wipers also favors the progress of the work by directing the strips above the workmen.

A traverse-guide is employed fordistributing the coils on the reeluniformly. It consists "threads at the ends in this case of the well-known rightand-leftthreaded screw 0, which works a slide 19 by means of a forked traveler g, which is pivoted in a boss 8 of the slide suitably to allow the fork to reverse in the reverse turns of the of the range of the slide. The slide works in suitable ways if on the stand it, and carries the upwardly-projecting guide-studs 7', between which the strips (1 run. As the coils vary considerably in diameter between the core and the f ullsize, these guidestnds' have necessarily to be of considerable length and require-some support at the top. I therefore provide a cross-bar to over the guideway at a suitable height, supported by a standard a: at each end, and on the upper ends of the guide-studs I apply a cross-head Le, connecting them together and so as to bear against the side of the cross-bar to resist the friction of the strips on the guide-studs. The standards as and the cross-barw are fixed, and the cross-head 2 slides forwardand backward along the said cross-bar 'w.

I am aware that traversing-guides are courmon in thread-spoofing apparatus, and I do not claim such guides broadly.

I am also aware that drawing and feed rolls have been used in sheet-metal-tinning appatus, as in the patent to Duff No. 229,527, and I do not broadly claim such rolls.-

I claim as my invention- 1. In apparatus for galvanizing and reeling metallic strips,.the combination of the galvanizi'ng bath, wipers through which the strips pass upward, reel having means for driving it of such construction as to be controlled by the feed rolls, and the positively driven drawing and feeding rolls located intermediately of said bath and reel and having driving mechanism constructed to control the speed of the reel to feed said strips through the bathat a uniform rate of speed for uniform application of coating to said strips, and to favor uniform temperature of the bath substantially as described.

2. The combination with the drawing and feeding rolls and reel, of the traversing guide located between the rolls and the reel, and means for actuatingit consisting of a single traverse guide screw, said traversing guide having the upwardly extended guide studs, the cross head .on the upper ends of said guide studs, and the guide-supporting stand having the cross bar supporting said cross head of the guide studs against the pull of the strips substantially as described.

Signed at New York city, in the county and State of New York, this 18th day of April,

A. D. 1894,. a

' THOMAS V. ALLIS. Witnesses: 1

A.- P. THAYER, W. J. MORGAN. 

